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Finding the Fourth Proportional to 7,854.03, 11,780.71 and 3,903.80

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Solution

The fourth proportional to 7,854.03, 11,780.71 and 3,903.80 is: 5,855.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,854.03 : 11,780.71 = 3,903.80 : x
  2. Step 2: Convert to fraction form
    7,854.03/11,780.71 = 3,903.80/x
  3. Step 3: Cross multiply
    7,854.03x = 11,780.71 × 3,903.80
  4. Step 4: Simplify right side
    7,854.03x = 45,989,467.03
  5. Step 5: Solve for x
    x = 45,989,467.03/7,854.03
  6. Step 6: Final answer
    x = 5,855.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.